DE3217099A1 - Verfahren zur herstellung einer magnetdispersion - Google Patents
Verfahren zur herstellung einer magnetdispersionInfo
- Publication number
- DE3217099A1 DE3217099A1 DE19823217099 DE3217099A DE3217099A1 DE 3217099 A1 DE3217099 A1 DE 3217099A1 DE 19823217099 DE19823217099 DE 19823217099 DE 3217099 A DE3217099 A DE 3217099A DE 3217099 A1 DE3217099 A1 DE 3217099A1
- Authority
- DE
- Germany
- Prior art keywords
- jet
- pigment
- magnetic
- anisotropic material
- magnetically anisotropic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005291 magnetic effect Effects 0.000 title claims description 40
- 239000006185 dispersion Substances 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000010902 jet-milling Methods 0.000 claims description 29
- 239000002270 dispersing agent Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 2
- 229920005596 polymer binder Polymers 0.000 claims description 2
- 239000002491 polymer binding agent Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 description 66
- 238000000227 grinding Methods 0.000 description 19
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 14
- 239000002245 particle Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 239000011877 solvent mixture Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 5
- LDCRTTXIJACKKU-ARJAWSKDSA-N dimethyl maleate Chemical compound COC(=O)\C=C/C(=O)OC LDCRTTXIJACKKU-ARJAWSKDSA-N 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- IEPRKVQEAMIZSS-UHFFFAOYSA-N Di-Et ester-Fumaric acid Natural products CCOC(=O)C=CC(=O)OCC IEPRKVQEAMIZSS-UHFFFAOYSA-N 0.000 description 4
- IEPRKVQEAMIZSS-WAYWQWQTSA-N Diethyl maleate Chemical compound CCOC(=O)\C=C/C(=O)OCC IEPRKVQEAMIZSS-WAYWQWQTSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- 235000011037 adipic acid Nutrition 0.000 description 3
- 239000001361 adipic acid Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000001034 iron oxide pigment Substances 0.000 description 3
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 229940113165 trimethylolpropane Drugs 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 229910002588 FeOOH Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005293 ferrimagnetic effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229940090961 chromium dioxide Drugs 0.000 description 1
- IAQWMWUKBQPOIY-UHFFFAOYSA-N chromium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Cr+4] IAQWMWUKBQPOIY-UHFFFAOYSA-N 0.000 description 1
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium(IV) oxide Inorganic materials O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70652—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides gamma - Fe2 O3
- G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/906—Roll or coil
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide
Landscapes
- Paints Or Removers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
- Soft Magnetic Materials (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823217099 DE3217099A1 (de) | 1982-05-07 | 1982-05-07 | Verfahren zur herstellung einer magnetdispersion |
| EP83104169A EP0093966B1 (de) | 1982-05-07 | 1983-04-28 | Verfahren zur Herstellung einer Magnetdispersion |
| JP58074167A JPS58204504A (ja) | 1982-05-07 | 1983-04-28 | 磁気分散体の製造方法 |
| DE8383104169T DE3375849D1 (en) | 1982-05-07 | 1983-04-28 | Process for producing a magnetic dispersion |
| US06/491,718 US4619777A (en) | 1982-05-07 | 1983-05-05 | Preparation of a magnetic dispersion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823217099 DE3217099A1 (de) | 1982-05-07 | 1982-05-07 | Verfahren zur herstellung einer magnetdispersion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3217099A1 true DE3217099A1 (de) | 1983-11-10 |
Family
ID=6162955
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19823217099 Withdrawn DE3217099A1 (de) | 1982-05-07 | 1982-05-07 | Verfahren zur herstellung einer magnetdispersion |
| DE8383104169T Expired DE3375849D1 (en) | 1982-05-07 | 1983-04-28 | Process for producing a magnetic dispersion |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8383104169T Expired DE3375849D1 (en) | 1982-05-07 | 1983-04-28 | Process for producing a magnetic dispersion |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4619777A (enrdf_load_stackoverflow) |
| EP (1) | EP0093966B1 (enrdf_load_stackoverflow) |
| JP (1) | JPS58204504A (enrdf_load_stackoverflow) |
| DE (2) | DE3217099A1 (enrdf_load_stackoverflow) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3420466A1 (de) * | 1984-06-01 | 1985-12-05 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von magnetogrammtraegern |
| JPH0662897B2 (ja) * | 1987-09-21 | 1994-08-17 | 富士写真フイルム株式会社 | 磁性塗料の製造方法 |
| US5316857A (en) * | 1988-12-03 | 1994-05-31 | Deutsche Aerospace Airbus Gmbh | Sheet material having a recognition enhancing feature |
| JPH0837106A (ja) * | 1994-05-19 | 1996-02-06 | Bridgestone Corp | ボンド磁石用磁性粉，ボンド磁石用組成物及びその製造方法 |
| JP2943909B2 (ja) * | 1996-06-17 | 1999-08-30 | 富士写真フイルム株式会社 | 磁気記録媒体 |
| AU2008219354B2 (en) | 2007-09-19 | 2014-02-13 | Viavi Solutions Inc. | Anisotropic magnetic flakes |
| JP5439861B2 (ja) * | 2008-02-29 | 2014-03-12 | 戸田工業株式会社 | 強磁性金属粒子粉末及びその製造法、並びに磁気記録媒体 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5527612B2 (enrdf_load_stackoverflow) * | 1974-05-17 | 1980-07-22 | ||
| FR2311588A1 (fr) * | 1975-05-23 | 1976-12-17 | Inst Francais Du Petrole | Methode et dispositif pour desagreger des agglomerats formes par des produits pulverulents |
| JPS5364797A (en) * | 1976-11-24 | 1978-06-09 | Tdk Corp | Rubber, plastic magnet and magnetic powder for them |
| DE2846623A1 (de) * | 1978-10-26 | 1980-05-08 | Basf Ag | Verfahren zur herstellung von schichtmagnetogrammtraegern |
| JPS55157216A (en) * | 1979-05-28 | 1980-12-06 | Hitachi Maxell Ltd | Manufacture of magnetic powder for magnetic recording |
| JPS56142603A (en) * | 1980-04-07 | 1981-11-07 | Toshiba Corp | Regenerating method for rare-earth magnet |
| JPS57179945A (en) * | 1981-04-28 | 1982-11-05 | Fuji Photo Film Co Ltd | Magnetic recording medium |
-
1982
- 1982-05-07 DE DE19823217099 patent/DE3217099A1/de not_active Withdrawn
-
1983
- 1983-04-28 JP JP58074167A patent/JPS58204504A/ja active Granted
- 1983-04-28 DE DE8383104169T patent/DE3375849D1/de not_active Expired
- 1983-04-28 EP EP83104169A patent/EP0093966B1/de not_active Expired
- 1983-05-05 US US06/491,718 patent/US4619777A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3375849D1 (en) | 1988-04-07 |
| JPS58204504A (ja) | 1983-11-29 |
| EP0093966B1 (de) | 1988-03-02 |
| EP0093966A2 (de) | 1983-11-16 |
| US4619777A (en) | 1986-10-28 |
| EP0093966A3 (en) | 1986-02-05 |
| JPH0559562B2 (enrdf_load_stackoverflow) | 1993-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8130 | Withdrawal |